Dermal laser treatment with or without combination of sclerotherapy is used for reticular, telangiectasia or non-bulging spider veins. Reticular veins are bluish lines or clusters on the surface of the skin. They are smaller than varicose veins, usually located on the back of the leg around the knee area. They may branch into or feed spider veins (telangiectasias) which are small asymptomatic veins that look like red or blue spider webs on the skin surface.
Dermal laser uses pulses of light on the trapped blood inside the vein. The light is absorbed and causes the veins to collapse. The veins will change shades from blue and purple to a light red and disappear in two to eight weeks.